HP LaserJet Enterprise 500 manual 287

NOTE: When the initialization process completes the connectivity LED should be illuminated solid green—the LED is off if the product is in Sleep mode

If after initialization the connectivity LED is not solid green, see Connectivity LED, product operating on page 252.

Table 3-4Connectivity LED, product initialization

Product initializing	Connectivity LED, normal state		Connectivity LED, error state
state
No power (power cord	Off		Not applicable
unplugged or power
button off)
Power on (immediately	Red, solid		Red, solid
after the power button	●	Duration should be 1 second or less	●	Firmware error; problem finding hardware
pressed)
				and booting the serial peripheral interface
				flash memory
				◦	Boot process halted
			Replace the formatter.
Serial peripheral	Green, solid		Red, solid
interface (SPI) flash			●	Firmware error; problem corrupt or missing
memory boot
				SPI flash memory
				◦	Boot process halted
			Replace the formatter.
HW checks on board	Green, solid		Red, solid
DRAM			●	Power on self check failure
				◦	Boot process halted
			Replace the formatter.
Control panel	Green, solid		Yellow, fast flash
connection initializes	NOTE: Control panel communication		●	Formatter to control panel connection failed
	successful. If an error occurs, a message should			◦	Boot process continues
	appear on the control-panel display.
			Check the cables between the formatter and
			control panel for damage. Make sure that the
			cables are fully seated.
Preboot menu	Green, solid		Red, solid
available (including			●	Diagnostic failure
diagnostics)
				◦	Follow diagnostic instructions
			Turn the power off, and then on again to restart
			the initialization process.

ENWW Tools for troubleshooting 251